KAWACHI, ICHIRO, and CANDYCE KROENKE. "Socioeconomic Disparities in Cancer Incidence and Mortality." Cancer Epidemiology and Prevention. : Oxford University Press, 2006-10-12. Oxford Scholarship Online. 2009-09-01. Date Accessed 19 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-10>.
KAWACHI, I., & KROENKE, C.(2006-10-12). Socioeconomic Disparities in Cancer Incidence and Mortality. In Cancer Epidemiology and Prevention. : Oxford University Press. Retrieved 19 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-10.
KAWACHI, ICHIRO, and CANDYCE KROENKE. "Socioeconomic Disparities in Cancer Incidence and Mortality." In Cancer Epidemiology and Prevention. : Oxford University Press, 2006-10-12. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-10.
KAWACHI I, KROENKE C. Socioeconomic Disparities in Cancer Incidence and Mortality. In: Schottenfeld D, Fraumeni JF. Cancer Epidemiology and Prevention. Oxford University Press; 2006. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-10. Accessed June 19, 2013.